摘要
针对存在瞬间强干扰和未知转动惯量的航天器姿态跟踪控制问题,递归设计了一种快速姿态跟踪鲁棒控制器。分析了抓捕非合作目标过程中航天器的转动惯量变化特性,基于反演法设计了一种自适应滑模姿态控制器,并理论验证了闭环系统的全局渐近稳定性。该控制器能使航天器的姿态快速、精确跟踪上期望姿态,且对转动惯量摄动和外部干扰具有较强的鲁棒性。典型条件仿真验证了控制器对抓捕航天器姿态控制的有效性和鲁棒性。
A novel fast robust attitude tracking controller is designed for deal with the problem of spacecraft attitude tracking control in the present of uncertain rotational inertia and instantaneous strong disturbances. The changing characteristics of the spacecraft rotational inertia in the process of capturing non-cooperative targets is analyzed, and an adaptive sliding-model attitude tracking controller is designed based on the backsteeping technology. The global asymptotic stability of the close-loop system is certified based on the Lyapunov theory. The attitude of the spacecraft with the controller designed in this paper tracks the desired attitude rapidly and accurately. The controller has strong robustness for counteracting the perturbation of the rotational inertia and external disturbances. Numerical simulations show the effectiveness and robustness of the adaptive sliding-mode controller.
出处
《控制工程》
CSCD
北大核心
2017年第8期1536-1541,共6页
Control Engineering of China
基金
西安建筑科技大学青年基金项目(QN1727)
西安建筑科技大学人才基金项目(6040317017)
关键词
航天器
姿态控制
自适应控制系统
滑模控制
在轨服务
Spacecraft
attitude control
adaptive control system
sliding mode control
on-orbit service
